


        function scrollLetter(){
            if($('.newsInfo>span').css('display') == 'none') return false;     
            var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
            var marginVal = scrollTop / 10 + 'px';
            $('.newsInfo>span')[0].style.marginTop = marginVal;
        }
        $(document).ready(function(){
            scrollLetter();
            $(window).scroll(function(){
                scrollLetter();
            })
        })